Windows 10: DPC Latency Scratching & Popping audio - YouTube playback

For some time now my audio has popped and scratched out a lot during YouTube or video playback. When playing music I have a car subwoofer hooked up to my PC with a splitter and cable. I play some bassy songs around 20-60hz and "Down In The DM - Yo Gotti 26,30,36hz" as tests and hear the issues as well.

Windows 10 version 1909 OS build 18363.1016


Please note that audio scratching occurs regardless of whether playing normal songs, with or without my subwoofer hooked up, and regardless of updated audio drivers or rolled back ones.














Audio driver version:




Here are the stats:

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:00:50 h:mm:ss on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: KYLE-PC
OS version: Windows 10, 10.0, version 1909, build: 18363 x64
Hardware: To be filled by O.E.M., To be filled by O.E.M.
CPU: AuthenticAMD AMD FXtm-6300 Six-Core Processor
Logical processors: 6
Processor groups: 1
RAM: 14232 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3687 MHz

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.


_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency µs: 538.20
Average measured interrupt to process latency µs: 12.408602

Highest measured interrupt to DPC latency µs: 532.70
Average measured interrupt to DPC latency µs: 5.687356


_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time µs: 23952.139951
Driver with highest ISR routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Highest reported total ISR routine time %: 0.125636
Driver with highest ISR total time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Total time spent in ISRs % 0.221614

ISR count execution time <250 µs: 31171
ISR count execution time 250-500 µs: 0
ISR count execution time 500-1000 µs: 0
ISR count execution time 1000-2000 µs: 0
ISR count execution time 2000-4000 µs: 0
ISR count execution time >=4000 µs: 0


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time µs: 24173.009493
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification NDIS, Microsoft Corporation

Highest reported total DPC routine time %: 0.247562
Driver with highest DPC total execution time: ndis.sys - Network Driver Interface Specification NDIS, Microsoft Corporation

Total time spent in DPCs % 0.969163

DPC count execution time <250 µs: 199375
DPC count execution time 250-500 µs: 0
DPC count execution time 500-10000 µs: 31
DPC count execution time 1000-2000 µs: 1
DPC count execution time 2000-4000 µs: 0
DPC count execution time >=4000 µs: 6


_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count: firefox.exe

Total number of hard pagefaults 82
Hard pagefault count of hardest hit process: 45
Number of processes hit: 12


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time s: 4.064784
CPU 0 ISR highest execution time µs: 23952.139951
CPU 0 ISR total execution time s: 0.359705
CPU 0 ISR count: 26214
CPU 0 DPC highest execution time µs: 24173.009493
CPU 0 DPC total execution time s: 2.401742
CPU 0 DPC count: 162224
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time s: 1.171698
CPU 1 ISR highest execution time µs: 23788.814755
CPU 1 ISR total execution time s: 0.171403
CPU 1 ISR count: 3981
CPU 1 DPC highest execution time µs: 1120.928397
CPU 1 DPC total execution time s: 0.304547
CPU 1 DPC count: 23022
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time s: 0.652535
CPU 2 ISR highest execution time µs: 23274.11310
CPU 2 ISR total execution time s: 0.093635
CPU 2 ISR count: 887
CPU 2 DPC highest execution time µs: 247.990236
CPU 2 DPC total execution time s: 0.071828
CPU 2 DPC count: 6270
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time s: 0.463733
CPU 3 ISR highest execution time µs: 23375.633849
CPU 3 ISR total execution time s: 0.044874
CPU 3 ISR count: 115
CPU 3 DPC highest execution time µs: 23924.452129
CPU 3 DPC total execution time s: 0.047677
CPU 3 DPC count: 2420
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time s: 0.399380
CPU 4 ISR highest execution time µs: 0.0
CPU 4 ISR total execution time s: 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time µs: 22298.754814
CPU 4 DPC total execution time s: 0.058817
CPU 4 DPC count: 3302
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time s: 0.363883
CPU 5 ISR highest execution time µs: 0.0
CPU 5 ISR total execution time s: 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time µs: 19877.904801
CPU 5 DPC total execution time s: 0.043752
CPU 5 DPC count: 2175
_________________________________________________________________________________________________________

:)

 

DPC Latency Scratching & Popping audio - YouTube playback

For some time now my audio has popped and scratched out a lot during YouTube or video playback. When playing music I have a car subwoofer hooked up to my PC with a splitter and cable. I play some bassy songs around 20-60hz and "Down In The DM - Yo Gotti 26,30,36hz" as tests and hear the issues as well.

Windows 10 version 1909 OS build 18363.1016








Even with updating to the latest audio driver, or rolling back previous drivers make no difference. Sometimes in the DPC latency app it'll show the DirectX Graphics Kernel thing too.

 

DPC Latency Scratching & Popping audio - YouTube playback

Hi, unusual to see those drivers listed.

Your MBO seems to be from around 2012, is that correct? If so, no guarantees whatsoever as to whether it will run Win 10 satisfactorily or not. Similarly your graphics card seems to be from around 2013.

Thank you for stating your build-1909.

- would you say this started after updating to a particular major Windows build?

Diagnosing this is difficult. You could
a. Start by disabling and eliminating as many elements as possible either by removal (peripherals, graphics, NIC..), disconnection, or checkboxes in Autoruns (free from MS). This is very crude and basic, and may not let you identify a cause. It's a trial and error approach.

b. Analytical- this is technically demanding- use the Windows Performance Analyser/Recorder (free from MS) - examples if you search the forum of its graphical output. Tutorial available.

c. For test purposes, grab a spare disk, and with only that in situ, install an OLDER build of Win 10 e.g. 1809. This is freely available using the tutorial on downloading a Win 10 iso file. (Heidoc iso downloader - Google). Install that and then see if you still have the same problem. If not, you have some basis for comparison of driver versions.

Please feel free to search the forum for other cases using e.g.
LatencyMon
stutter

You are probably looking for an appropriate older version of one or more drivers.

Noted you have a huge number of tabs open. Perform any tests with as few programs open as possible.

Perform a search such as this and review what people have found:

 

DPC Latency + Audio popping Dell G7

Hi,

I'm experiencing DPC latency issues and audio popping on my Dell G7. The DPC latency issues are causing some recordings in my DAW to skip which can happen at any random time.

The audio popping occurs when I haven't had any audio playing for a few moments. For example: I'll play a video, hear a "pop" out of the speakers, close the video, wait a few moments, reopen the video "pop" again.

I've run Latency Monitor which is showing issues with ACPI.sys and nvlddmkm.sys (See the attached screenshot).

Online everyone seems to have tried different things with/without success.

Has anyone here had this problem before?

Windows 10 Pro
Version 1909 (OS Build 18363.778)

- - - Updated - - -

Still running Latency Monitor at the moment and nvlddmkm.sys has disappeared